Cold weather grips parts of the country

January 16, 2013 10:36 PM

Frost covers a window early Tuesday, Jan. 15, 2013, in Casper, Wyo. The National Weather Service says wind chill temperatures along Interstate 80 were 30 to 35 degrees below zero early Tuesday but that relatively warmer temperatures should develop later. (AP Photo/Casper Star-Tribune, Dan Cepeda) less

Frost covers a window early Tuesday, Jan. 15, 2013, in Casper, Wyo. The National Weather Service says wind chill temperatures along Interstate 80 were 30 to 35 degrees below zero early Tuesday but that ... more

Ice-covered fountains flow in front of Caesars Palace in Las Vegas, on Tuesday, Jan. 15, 2013. The Las Vegas Valley, along with much of the West, has been experiencing below-average freezing temperatures for several days. (AP Photo/Las Vegas Review-Journal, Jessica Ebelhar) LOCAL TV OUT; LOCAL INTERNET OUT; LAS VEGAS SUN OUT less

Ice-covered fountains flow in front of Caesars Palace in Las Vegas, on Tuesday, Jan. 15, 2013. The Las Vegas Valley, along with much of the West, has been experiencing below-average freezing temperatures for ... more